A Satanic scion hunts demons and spirits manifesting in our world by virtue of his own diabolical blood. He's monitored by a global organization tied to the Church to keep this demonic activity under wraps. It's a short leash; there's little tolerance for this demon-blooded misbehaving and going rogue means going dead. I'm looking for his partner-- maybe someone else in the organization or his handler. Maybe they've got faith-based powers (don't need to be Judeo-Christian). Maybe super technology. Maybe they're a vampire. I'm interested in something in-between The Exorcist and Hellblazer/Constantine in style, something dark and spooky without going full urban fantasy. Possessions, poltergeists, bloody rituals, killing sprees, demonic apparitions? Yes please! But maybe save the full cgi Hellboy demons until a major plot ending. Slash, please!